The present invention relates to novel,fluoro-substituted 2-aryl-3,5-dicyano-4-(1H-indazol-5-yl)-6-methyl-1,4-dihydropyridine derivatives(see formula I)wherein Ar and R1-R4 are as defined in the specification, having proteintyrosine kinase inhibitoryactivity, to a process for the manufacture thereof and to the use thereof forthe treatment ofc-Met-mediated diseases or c-Met-mediated conditions, particularly Cancer andother proliferative disorders.